Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
华宇平台登录（网址:QY81.COM）华宇平台登录_华宇平台登录_华宇平台登录_华宇平台登录_华宇平台登录华宇平台登录_华宇平台登录_华宇平台登录_srIrnUnU
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
